SpaceX on Wednesday granted Anthropic full access to its Memphis-based Colossus 1 supercluster, handing the AI company more than 220,000 NVIDIA GPUs and over 300 megawatts of capacity deployable within a month. The compute pact comes roughly five weeks before SpaceX plans a $1.75 trillion initial public offering on the Nasdaq — a figure bankers are already whispering could land closer to $2 trillion.
What the compute pact unlocks for Anthropic
Anthropic gets doubled Claude Code rate limits for paid users and higher API ceilings on its Opus models. The company crossed a $1 trillion implied valuation on private markets earlier this year, so the extra horsepower isn't cheap. Colossus 1 is one of the largest AI superclusters around, and this deal puts Anthropic at the front of the queue for GPU time.
IPO timeline and the xAI merger
SpaceX confidentially filed its S-1 with the SEC on April 1. The roadshow starts the week of June 8, with the listing expected in June. SpaceX merged with xAI back in February, folding Musk's AI venture into the rocket-and-starlink operation. Banker chatter has IPO guidance drifting toward $2 trillion, though the initial filing pegged it at $1.75 trillion. How much AI compute revenue from Musk's operations gets disclosed in that S-1 could reset valuation conversations before the roadshow even begins.
Musk's human-harm clause
Elon Musk reserves the right to reclaim compute from Anthropic if its AI engages in actions that harm humanity. The clause is written into the contract, giving SpaceX a kill-switch on the supercluster capacity. What counts as harm and who makes the call? The contract doesn't spell that out.
Orbital compute ambitions
SpaceX and Anthropic flagged interest in multi-gigawatt orbital compute using Starship hardware for future AI training workloads. That would move some of the planet's most energy-hungry computations off Earth entirely. For now, the supercluster in Memphis is the main stage.
The big unresolved question hanging over both companies: how much of that compute revenue and AI valuation gets baked into SpaceX's S-1 disclosure before the roadshow begins June 8.
